# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html


# useful for handling different item types with a single interface

# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html
import json

import redis


# useful for handling different item types with a single interface


class JulangPipeline:

    def open_spider(self, spider):
        self.client = redis.Redis(host="localhost", port=6379)
        self.client.delete("tasks")

    def process_item(self, item, spider):
        self.client.lpush("tasks", json.dumps(item, ensure_ascii=False))
        return item

    def close_spider(self, spider):
        self.client.close()
